Improvement in low-water indicators



N4 PETERS, PHOTO-LITHOGRAFMER, WASHINGTON, D C.

@attenlats stmt fitte.

LORENZO i FULTON, OF E'DINBURG, INDIANA. Letters Patent No. 64,007,dated April 23, 1867.

IMPROVEMENT IN 'Low-WATER INDICATORS.

-Jilgi .rlgttle Infant in in ttm llrttett 33mm mit making pnt nf itstime.

TO ALL WHOM IT MAY` GONCERN:

Be it known that I, LORENZO FULTON, of Edinburg, in the county ofJohnson, and State of Indiana, have invented a new and improvedSafety-Gauge for Steam Generators; andl I do hereby declare thefollowing to he a full and exact description of the same, referencebeing had to the accompanying drawings, which are made part of thisspecification, and in which- Figure 1 is a plan of my improvedsafety-gauge.

Figure 2 isla vertical section of the same in the plane indicated by theline a' x; and

Figure 3 is a vertical section taken at the line y y.

Similar letters of reference indicate corresponding parts in the severalfigures.

My aim in devising the subject of the present invention has been toprovide a moresimple and effective means for indicating a low state ofthe water in steam generators, in order that the supply may be increasedin time to avoid danger of explosion or damage. To attain the desiredend I insert into the boiler, at a point correspondingv with the lowerwater line, a pipe which, rising vertically outside ot" the boiler, isenclosed about its upper portion by a sleeve pipe-containing a suitableliquid, which is heated and converted into steam by steam which riseswithin the enclosed pipe when the water' reaches the low-water line inthe boiler, the steam in the sleeve pipe causing the liquid therein toact upon a disk which vibrates a trigger to open a blow-0E aperture oractuate an alarm apparatus. i

In order that others skilled in the art to which my invention appertainsmay be enabled to fully understand and use the same, I will proceed todescribe it in detail.

A may represent a boiler of any suitable form, and provided with theordinary appurtenances for safety and convenience. AB is a. pipe, themouth of which is within the boiler at a point corresponding `to thelowwater-line. Outside of the" boiler the upper portion ofl the pipe Bis enclosed by a sleeve pipe, C, which is supplied with alcohol, water,or other suitable liquid. D is a bent pipe leading from the/sleeve pipeC, and employed to conduct the liquid therefrom and cause it to act'upona dish/E, which rests upon an elastic packing, G, which is held upon theface-plate F by the fixed flange or annuliII. The slotted'stenr INI/,which rises from the disk E, holds the end of a pivoted trigger, J,which, when vibrated, may be made to 'actuate an alarmbell or releasethe `end of the lever K, which, in rising, lifts the valve Land opensthe upper end of pipe B, through which steam from the boiler may beallowed to blow oiI. When the water in the boiler` has reached itslowest state the mouth of pipe B is in communication with` the steamAspace, and the steam passingup through B heats the liquid in C andconverts a portion of it intosteam. The steam thus generated in O actsto -force the liquid therefrom into pipe D, rising inwhich it impingesagainst the elastic packing G, raises disk E, vibrates the trigger J,and thereby opens the blow-off valve or starts an alarm apparatus. Apipe, M, may be used tb convey stea l from the boiler to the upper partofV pipe B, so as to counteract the upward pressure of steam in thelatter, and thereby enable the water to readilylflow out of Vthe sameand into the boiler when the water reaches theV low line. The disk E andpacking Gr can be removed to permit O to be supplied with liquid throughD, during which process the opening of the cock N admits of the freedisplacement of the conned air. i l

Having thus described my invention, what I claim as new, and desire tosecure b'yfLetters Patent, is

1. 'The arrangement of the pipe D in connection with the chamber O,substantially as shown anddescribed, for the purpose of conveying asignal to a point at any desired distance, as set forth. v

2. claim the combination ot' the pipes B, O, and D with the disk E andtrigger J, substantially as and for the purpose set forth'. l .a

3. I claim the equalizing pipe M in combination with the boiler A andpipe B, substantially as and for the purposes described.

To the above specification of my improvement I have signed my hand this1st day of April, 1867.

I Y LORENZO FULTON.

Witnesses:

GEO. A. Monnrsou, C. D. SMITH.

